Ready for Instagram post ideas for September 2021? And caption ideas and hashtags?

You can use these ideas for your personal account or for your business account.

You can create any post you want:

You can use Preview App to:

  • Schedule your posts and Stories
  • Find caption ideas
  • Find specific hashtags
Here are post ideas for September 2021, week-by-week.

Week #1: September post ideas

Wednesday 1 September:

  • Introduce yourself or give a life update.
  • Ask your followers to introduce themselves in the comments (what’s your name and where are you from?)

Thursday 2 September:

  • Myth vs Reality. Bust a myth (personal or in business-related). And share your reality.

Friday 3 September:

  • Reels: Join a trend. Tip: Check feed for weekly Reels trends.

Saturday 4 September:

  • Photo dump: Favorite summer / winter photos or products you’ve launched in summer / winter. Ask people which one they like: 1, 2 or 3?

Sunday 5 September:

  • Rest*

We include rest days if you want to do a social media detox and refresh your creativity.
You can rest if you want to; or you can post whatever you want.

Week #2: September post ideas

This week is perfect for bookstagrammers because it has “Read a Book Day” and “World Literacy Day”.

However, you can join the holidays even if you’re not a book blogger.


Monday 6 September

  • “Read a Book Day”
  • Post idea: Share your favorite books or book quotes.
  • Caption ideas: use the “Book” caption prompts in Preview App for quotes and fun questions to ask your followers to get more comments.
  • Hashtags: Use the “Book” hashtags in Preview App.

Tuesday 7 September

  • 3 reasons why you shouldn’t ___

Wednesday 8 September

  • “World Literacy Day”
  • Caption ideas: see the “Book” caption prompts in Preview App.
  • Don’t want to post about books? Choose a “Personal”, “Service-Based Business” or “Get Comments” caption prompts in Preview App.

Thursday 9 September

  • Share a hack (a life hack or hack using a product)

Friday 10 September

  • Reels: Join a trend.
  • Check for weekly Reels trends.

Saturday 11 September

  • Create a “Top 5 Favorite” list
  • Post ideas:
    • Fashion: 5 favorite accessories, fall outfits, spring outfits, earrings, shoes
    • Food blogger: Top 5 favorite ingredients, breakfasts, lunches, dinners, snacks, pantry staples
    • Product business: Top 5 favorite products, uses of a product, colors
    • Service business: Top 5 favorite tools, benefits, advantages, tricks,

Week #3: September post ideas

This week can be “Positivity” week because it is “Positive Thinking Day” on Monday.


Monday 13 September

  • “Positive Thinking Day”
  • Post ideas: Share a positive quote or what helps you feel more positive. Fit the topic to match what your account is about.
  • For example:
    • Fashion blogger: 5 outfits that make you feel better
    • Food blogger: 5 dishes that make you happy
    • Product business: how to use your product to create relaxation (candles, essential oils, art)
    • Service business: talk about how you help solve solutions and bring peace of mind to your clients or your journey towards positivity Etc
  • Hashtags: Use “Positivity”, “Self-Love”, “Self-Care” hashtags in Preview App

Tuesday 14 September

  • Answer a FAQ (frequently asked question ) you might receive in your DMs a lot, or a question your friends or family ask you. It can be fun or serious.

Wednesday 15 September

  • 3 fun facts about:
    • You, or
    • Your business
    • Your industry
  • Hashtags: use the “Business” hashtags or industry-related hashtags in Preview App.

Thursday 16 September

  • Share “5 ideas”. Tip: Make it fit your account.
  • For example:
    • Fashion blogger: 5 outfits ideas for fall
    • Food blogger: 5 breakfast ideas for fall
    • Photographers: 5 pose ideas
    • Product business: 5 ways to style / use [your product]
    • Etc…
  • Caption: Ask your followers which idea they like the best: 1, 2, 3, 4 or 5?

Friday 17 September

  • Reels: Join a trend!
  • See the latest trends on feed.

Saturday 18 September

  • Share your business story.
  • End of caption: Ask your followers if they would like to hear more about your behind the scenes and story. Or if your audience are business owners, ask about their business story.

Week #4: September post ideas

Monday 20 September

  • “Women Friendship Day”
  • Post idea: Share a photo of you and your girl friends. Or give a shoutout a woman (or more) you admire in your life.
  • Caption ideas: “Friend” and “Love” caption ideas in Preview App.
  • Hashtags: “Friend”, “Relationship”, “Business Woman”, “Spiritual Business Women”, “Women Empowerment” in Preview App.

Tuesday 21 September

  • “World Gratitude Day”
  • List 3 things you are grateful for.
  • End of caption: Ask your followers to comment what they are grateful for.
  • Hashtags: “Gratitude”, “Positivity”, “Quote” (if you share a quote), “Affirmation”, “Abundance”, “Mental Health”, “Mindset” – and more – in Preview App.

Wednesday 22 September

  • Fall / Spring Start
  • Share your first fall or spring photo. See fall photo ideas.
  • Examples:
    • Fashion blogger: Fall outfit
    • Food blogger: Fall recipe
    • Photographers: Fall photo (it can be photos from last year)
  • Hashtags: “Fall 2021”
  • Caption ideas: see “Fall” prompts, puns, quotes and fun questions in Preview App

Thursday 23 September

  • 2 truths and a lie about you and/or your business or product.
  • Ask your followers to guess which one is the lie.
  • Reveal the answer the next day in your post, comments or Stories.

Friday 24 September

  • Reels: Join a trend.
  • See the latest trends on feed.

Saturday 25 September

  • Share one of your unpopular opinion.
  • Make it fun or serious and fit your brand.
  • End of caption: Ask your followers what they think about this unpopular opinion OR ask them to share their own unpopular opinion in the comments!

Week #5: September post ideas

Monday 27 September

  • “World Tourism Day”
  • Share your favorite photos / videos of your country or places you’ve travelled to.
  • Hashtags: Type “Travel” in the search bar of the Hashtag Finder in Preview to see all the travel related hashtags.
  • Caption ideas: see all the “Travel” caption prompts in Preview App.

Tuesday 28 September

  • Pros and Cons of _

Wednesday 29 September

  • September photo dump (share your favorite photos / videos of September in a carousel or Reels)

Thursday 30 September

  • “World Podcast Day”
  • Share your favorite podcasts.
  • End of caption: Ask your followers to tag their favorite podcast(s) in the comments.
  • Hashtags: “Podcast” and other hashtags based on what the podcast is about. For example, if it is about self-development and growth, use the “Self-Development” and “Self-Growth” hashtags. If it is about Business, use the “Business” hashtags. Type these keywords in the search bar of Preview’s Hashtag Finder.

That’s it!

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